Yes, in the Passes page, open the map you wish to modify. Here you can update all the information and save it by clicking Save.
The two cards look slightly different because they are used on a different brand of phone. The pass otherwise does exactly the same thing.
On a card with Announcements (the Membership card), you can customise the Announcement by opening the card on the Passes page. You can then customise the Announcement on the Front side tab at the bottom.
Can't figure it out?